Lock nut



@een H i923. 3,477,509

A. W. LOWRY L O C K N UT Filed April 8, 1922 Patented Bec. ll, 1923,.

lll it l il @litt FHQ.

ADEN W. LOVRY, LONGTON, KANSAS.

LOCK NUT.

Application filed April. 5,

To all whom t may concern.'

Be it known that I, DEN W. Lownr, a ci izen of the United States, residing; at Longton, in the county of Elk and State of Kansas, have invented new and useful improrements in Lock Nuts, of which the is a specification.

'ifnis invention relates to .improvements in loch nuts and has tor an object the provision ot means whereby a pair of nuts may be separately applied andlocked together to prevent accidental retrograde movement.

Another object of the invention is the provision of means whereby a pair of nuts may be loclred together above stated, means however' being provided `for releasing` the nuts to permitof their removal, the releasing means in no way mutilating the nuts so that the latter may be again used.

lilith the above and other objects in view, the invention further includes lthe following novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claim.

In the drawings Figure 1 is a sectional view showing the nut applied to a bolt in locked position.

Figure 2 is a similar view showing the nuts unlocked.

Figure 3 is an inner tace view ot one ot the nuts.

Figure 4 is a similar view oi the other. uut.

Figure 5 is a section on the line 5--5 of' Fifure 4.

later-ring in detail to the drawings, wherein like characters of reference denote corresponding parts, the reference character 10 iiulicates a portion of the bolt. to which nus .l1 and l2 are shown applied. These nuts engage the threads off the bolt in the usual :inner and the nut 11 is provided `with a concentrically arranged recess 18 haring in the bottom thereof radially arranged teeth 14. The nut 12 is also provided with a recess indicated at 15 and when the nuts are in use, the recesses 13 and 15 are opposed as shown in Figures 1 and 2.

1922. Serial No. 550,665.

The recess 15 preferably extends Jfor only a portion of the distance around the bore of the n ut and arranged within this recess is arcuate resilient member 16. One end ot this member is secured to the bottoni of the recess 16 by means ot a screw or similar fastening devices 17, while the opposite end 18 the member 16 provides a dog for engagement with the teeth 14. `ormally, the end 18 ot the member 1S is located within the plane ot the face ot the nut 12 therefore will not engage the teeth 14. lt is forced outward however int i such engagement by means of a screw 19 which c gases a threaded opening 2O extending thr ugh the nut 12.

The nuts are arranged in the position shown in Figure 2, whereupon the screw may be forced inward to engage the teeth 14 and retrograde or reverse movement or the nuts will be prevented. To remove the nuts, the screw 19 is moved outward, whereupon the resilient character ot' the dog 18 will cause it to be desengaged trom the teeth'14.

The invention is suscepticle or various changes in its form, proportions and minor details or construction and the right is herein reserved to maire such changes as properly fall within the scope of the appended claim.

Having described the invention what is claimed is The combination with a bolt, ot a pair of superposeid nuts provided with recesses in their opposed faces, ratchetteeth formed in the bottom of one ot the recesses, a split resilient washer secured within the recess of the other nut and having one end eX- tended obliquely and adapted to engage the ratchet teeth, a 'fastening element holding the opposite end oi the washer within the recess and a threaded element carried by the last mentioned nut and engageable with the free end of the washer to torce the same into engagement with the ratchet teeth.

1n testimony whereof I affix my signature.

ADEN W. LOWRY. 

